All right, from playing piano myself I started getting into classical music at age 16. Here is part of my repertoire from years past.
J.S. Bach – First lessons in Bach (all of book 1); Jesu, Joy of Man’s Desiring; Two- part inventions – inventios – numbers 1, 2, 4, 5, 8, 9, 10, 13, 14, 15; Three-part invention – sinfonias 2
C.P.E. Bach – Solfeggietto
Johann Pachelbel – Canon in D
Chopin (various pieces) – Preludes, Waltzes, Nocturnes, Polonaises, Etudes
Mozart – Sonata in C, Fantasy in d minor
Bella Bartok – Mikrokosmos books 1 to 6
Debussy – 1st Arabesque, Clair de Lune, Reverie
Moszkowski – Opus 72 etude number 2 in G minor
Schubert – Impromptus opus 90 and opus 142
Scriabin – Etude Opus– 2 number 1
Handel – Sarabande HWV 437
Rachmaninoff – Preludes, especially Opus 3 number 2
Beethoven – Fur Elise, Adieu to the Piano, Two “easy” sonatas: Opus 49 numbers 1 and 2, Pathetique, Moonlight
Scott Joplin Maple Leaf Rag
The Phantom of the Opera – Think of Me, Angel of Music, The Phantom of the Opera (just a bit), The Music of the Night, All I Ask of You